<?php include 'inc/header.php'; ?>

<?php
  $name = $email = $courseName = $content = '';
  $nameErr = $emailErr = $courseNameErr = $contentErr = '';

  if (isset($_POST['submit'])) {
    if(empty($_POST['name'])){
      $nameErr="姓名为必填项！";
    }else{
      $name=filter_input(INPUT_POST,'name',FILTER_SANITIZE_FULL_SPECIAL_CHARS);
    }
    
    if(empty($_POST['email'])){
      $emailErr="邮箱为必填项！";
    }else{
      $email=filter_input(INPUT_POST,'email',FILTER_SANITIZE_FULL_SPECIAL_CHARS);
    }

    if(empty($_POST['course'])){
      $courseNameErr="邮箱为必填项！";
    }else{
      $courseName=filter_input(INPUT_POST,'course',FILTER_SANITIZE_FULL_SPECIAL_CHARS);
    }


    if(empty($_POST['body'])){
      $contentErr="邮箱为必填项！";
    }else{
      $content=filter_input(INPUT_POST,'body',FILTER_SANITIZE_FULL_SPECIAL_CHARS);
    }


    if (empty($nameErr) && empty($emailErr) && empty($courseNameErr) && empty($contentErr)) {
      // 添加到数据库
      $sql = "INSERT INTO review (name, email, course_name, content) VALUES('$name', '$email', '$courseName', '$content')";
    
      if (mysqli_query($conn, $sql)) {
        // 成功
        header('Location: reviews.php');
      } else {
        // 错误
        echo "出错：" . mysqli_error($conn);
      }
    }
  
  }

  echo $nameErr;
  echo $name;


?>





    <img src="img/logo.avif" class="w-25 mb-3" alt="">
    <h2>课程评价</h2>
    <p class="lead text-center">为你所上的课程留下评价</p>
    <form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF'])?>" method="POST" class="mt-4 w-75">
      <div class="mb-3">
        <label for="name" class="form-label">你的姓名</label>
        <input type="text" class="form-control <?php echo $nameErr ? 'is-invalid' : null; ?>" id="name" name="name" placeholder="请输入你的姓名">
        <div class="invalid-feedback">
         <?php echo $nameErr; ?>
        </div>
      </div>
      <div class="mb-3">
        <label for="email" class="form-label">你的邮箱</label>
        <input type="text" class="form-control <?php echo $emailErr ? 'is-invalid' : null; ?>" id="email" name="email" placeholder="请输入你的邮箱">
        <div class="invalid-feedback">
         <?php echo $emailErr; ?>
        </div>
      </div>
      <div class="mb-3">
        <label for="course" class="form-label">课程名称</label>
        <input type="text" class="form-control <?php echo $courseNameErr ? 'is-invalid' : null; ?>" id="course" name="course" placeholder="请输入你的课程名称">
        <div class="invalid-feedback">
         <?php echo $courseNameErr; ?>
        </div>
      </div>
      <div class="mb-3">
        <label for="body" class="form-label">评价内容</label>
        <input type="text" class="form-control <?php echo $contentErr ? 'is-invalid' : null; ?>" id="body" name="body" row="4" placeholder="请输入你的评价">
        <div class="invalid-feedback">
         <?php echo $contentErr; ?>
        </div>
      </div>
      <div class="mb-3">
        <input type="submit" name="submit" value="提交评价" class="btn btn-dark w-100">
      </div>
    </form>

    
<?php include 'inc/footer.php'; ?>



   
